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Topotactic Transformation Synthesis of 2D Ultrathin GeS2 Nanosheets toward High-Rate and High-Energy-Density Sodium-Ion Half/Full Batteries.
ACS Nano. 2020 Jan 28; 14(1):531-540.AN

Abstract

Currently, development of metal sulfide anodes for sodium-ion batteries (SIBs) with high capacity, fast charging/discharging, and good cycling performance continues to present a great challenge. Hence, a topochemical conversion strategy is reported to fabricate 2D ultrathin GeS2 nanosheets (thickness: ∼1.2 nm) as the potential anodes for sodium storage. The 2D ultrathin nanostructure can mitigate the electrode-electrolyte contact issue faced by bulk material and provide shorter transport/diffusion pathways for Na ions and electrons, resulting in excellent rate performance. Impressively, ultrathin GeS2 nanosheets can bring a large capacity of 515 mAh g-1 even after 2000 cycles under 10 A g-1. Additionally, as revealed by calculations and in situ/ex situ technique analysis, a favorable mechanism of Na+ intercalation/deintercalation into/from the GeS2 interlayer region (GeS2 ↔ NaxGeS2) is demonstrated. Furthermore, when coupled with the advanced cathode of Na3V2(PO4)2O2F, the sodium-ion full cell shows a stable high energy density (213 Wh kg-1), which makes our ultrathin GeS2 nanosheets a promising candidate for SIBs.

Authors+Show Affiliations

School of Chemical Engineering and Light Industry , Guangdong University of Technology , Guangzhou 510006 , China.School of Chemical Engineering and Light Industry , Guangdong University of Technology , Guangzhou 510006 , China.Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage Devices, Collaborative Innovation Center of Advanced Energy Materials, School of Materials and Energy , Guangdong University of Technology , Guangzhou 510006 , China.Institute for Structure and Function and Department of Physics , Chongqing University , Chongqing 400030 , China.Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education , Zhengzhou University , Zhengzhou 450002 , China.School of Chemical Engineering and Light Industry , Guangdong University of Technology , Guangzhou 510006 , China.School of Chemical Engineering and Light Industry , Guangdong University of Technology , Guangzhou 510006 , China.School of Chemical Engineering and Light Industry , Guangdong University of Technology , Guangzhou 510006 , China.Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage Devices, Collaborative Innovation Center of Advanced Energy Materials, School of Materials and Energy , Guangdong University of Technology , Guangzhou 510006 , China.Hefei National Laboratory for Physical Sciences at the Microscale, Department of Materials Science and Engineering , University of Science and Technology of China, Key Laboratory of Materials for Energy Conversion, Chinese Academy of Sciences (CAS) , Hefei , Anhui 230026 , China. State Key Laboratory of Fire Science , University of Science and Technology of China , Hefei , Anhui 230026 , China. Dalian National Laboratory for Clean Energy (DNL) , Chinese Academy of Sciences (CAS) , Dalian 116023 , China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31846288

Citation

Li, Cheng Chao, et al. "Topotactic Transformation Synthesis of 2D Ultrathin GeS2 Nanosheets Toward High-Rate and High-Energy-Density Sodium-Ion Half/Full Batteries." ACS Nano, vol. 14, no. 1, 2020, pp. 531-540.
Li CC, Wang B, Chen D, et al. Topotactic Transformation Synthesis of 2D Ultrathin GeS2 Nanosheets toward High-Rate and High-Energy-Density Sodium-Ion Half/Full Batteries. ACS Nano. 2020;14(1):531-540.
Li, C. C., Wang, B., Chen, D., Gan, L. Y., Feng, Y., Zhang, Y., Yang, Y., Geng, H., Rui, X., & Yu, Y. (2020). Topotactic Transformation Synthesis of 2D Ultrathin GeS2 Nanosheets toward High-Rate and High-Energy-Density Sodium-Ion Half/Full Batteries. ACS Nano, 14(1), 531-540. https://doi.org/10.1021/acsnano.9b06855
Li CC, et al. Topotactic Transformation Synthesis of 2D Ultrathin GeS2 Nanosheets Toward High-Rate and High-Energy-Density Sodium-Ion Half/Full Batteries. ACS Nano. 2020 Jan 28;14(1):531-540. PubMed PMID: 31846288.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Topotactic Transformation Synthesis of 2D Ultrathin GeS2 Nanosheets toward High-Rate and High-Energy-Density Sodium-Ion Half/Full Batteries. AU - Li,Cheng Chao, AU - Wang,Bo, AU - Chen,Dong, AU - Gan,Li-Yong, AU - Feng,Yuezhan, AU - Zhang,Yufei, AU - Yang,Yang, AU - Geng,Hongbo, AU - Rui,Xianhong, AU - Yu,Yan, Y1 - 2019/12/20/ PY - 2019/12/18/pubmed PY - 2019/12/18/medline PY - 2019/12/18/entrez KW - anode KW - high energy density KW - sodium-ion batteries KW - topotactic transformation KW - ultrathin GeS2 nanosheets SP - 531 EP - 540 JF - ACS nano JO - ACS Nano VL - 14 IS - 1 N2 - Currently, development of metal sulfide anodes for sodium-ion batteries (SIBs) with high capacity, fast charging/discharging, and good cycling performance continues to present a great challenge. Hence, a topochemical conversion strategy is reported to fabricate 2D ultrathin GeS2 nanosheets (thickness: ∼1.2 nm) as the potential anodes for sodium storage. The 2D ultrathin nanostructure can mitigate the electrode-electrolyte contact issue faced by bulk material and provide shorter transport/diffusion pathways for Na ions and electrons, resulting in excellent rate performance. Impressively, ultrathin GeS2 nanosheets can bring a large capacity of 515 mAh g-1 even after 2000 cycles under 10 A g-1. Additionally, as revealed by calculations and in situ/ex situ technique analysis, a favorable mechanism of Na+ intercalation/deintercalation into/from the GeS2 interlayer region (GeS2 ↔ NaxGeS2) is demonstrated. Furthermore, when coupled with the advanced cathode of Na3V2(PO4)2O2F, the sodium-ion full cell shows a stable high energy density (213 Wh kg-1), which makes our ultrathin GeS2 nanosheets a promising candidate for SIBs. SN - 1936-086X UR - https://www.unboundmedicine.com/medline/citation/31846288/Topotactic_Transformation_Synthesis_of_2D_Ultrathin_GeS2_Nanosheets_toward_High_Rate_and_High_Energy_Density_Sodium_Ion_Half/Full_Batteries_ L2 - https://dx.doi.org/10.1021/acsnano.9b06855 DB - PRIME DP - Unbound Medicine ER -
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